Question

please help me with this question​

Answer 1

Answer:

Some configuration is missing because the correct configuration is 1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s² ... you have written 4s and 4p,,, but if the last one is 4p than the answer is given below.

Note the powers on s,p,d,f shows the number of electrons

Explanation:

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶ is complete configuration of Krypton element.

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, this is configuration.

Belongs to Noble gas group.

Xenon is below the Krypton and it's electronic configuration is 1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p¹⁰.